The Teslascope was a radio transmitter designed by Serbian scientist Nikola Tesla with the intention of communicating with extraterrestrial life on other planets. It received publicity after Tesla's statement on the device was published by Time magazine in their July 20, 1931 issue celebrating Tesla's 75th birthday.

[I have conceived] a means that will make it possible for man to transmit energy in large amounts, thousands of horsepower, from one planet to another, absolutely regardless of distance. I think that nothing can be more important than interplanetary communication. It will certainly come some day. and the certitude that there are other human beings in the universe, working, suffering, struggling, like ourselves, will produce a magic effect on mankind and will form the foundation of a universal brotherhood that will last as long as humanity itself.